如何将jsp中的列表值发送给控制器
当我将值jsp返回给contoller updateuser方法时,我在以下类中创建了commonMonth的值,该值在monthlyMemberSatus列表中显示为空值。我不知道什么是我的代码中的错误...帮助我如何将jsp中的列表值发送给控制器
控制器:
@RequestMapping(value = "/tempOpen",method = {RequestMethod.POST, RequestMethod.GET})
public ModelAndView monthMemberList(@ModelAttribute("commanMonth") CommanMonth commanMonth) {
commanMonth.setMonthlyMemberStatus(dataService.listMonthMember());
return new ModelAndView("hlo","commanMonth",commanMonth);
}
@RequestMapping("/tempClose")
public ModelAndView updateUser(@ModelAttribute("commanMonth") CommanMonth commanMonth) {
System.out.println(month.getMonthlyMemberStatus());
dataService.updateRow(month);
return new ModelAndView("hlo","commanMonth",month);
}
模型类:
public class CommanMonth {
private List<MonthlyMemberStatus> monthlyMemberStatus;
public List<MonthlyMemberStatus> getMonthlyMemberStatus() {
return monthlyMemberStatus;
}
public void setMonthlyMemberStatus(List<MonthlyMemberStatus> monthlyMemberStatus) {
this.monthlyMemberStatus = monthlyMemberStatus;
}
JSP页面:hlo.jsp
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body>
${commanMonth}
<form:form modelAttribute="commanMonth" method="post"
action="tempClose.html">
<table width="400px" height="150px">
<c:forEach items="${commanMonth.monthlyMemberStatus}" var="list" varStatus="status">
<tr>
<td><form:label path="monthlyMemberStatus[${status.index}].roomMembers.memberName" >${list.roomMembers.memberName}</form:label></td>
<td><form:input path="monthlyMemberStatus[${status.index}].noOffDays" value="31"/></td>
<%-- <td style="visibility:hidden"><form:input path="li[${status.index}].bookId" value="${list.bookId}" readonly="true"/></td>
<td><form:input path="temp[${status.index}].book" value="hloloo"/></td>
</tr> --%>
</c:forEach>
<tr>
<td></td>
<td><input type="submit" value="Update" />
</td>
</tr>
</table>
</form:form>
</body>
</html>
我想你没有在你的任何getter方法中指定@ModelAttribute(“month”),所以你需要先定义第一个知道spring控制器与模型属性具有名称“月”
也尝试添加输入标签像下面代替路径
<td><input name="monthlyMemberStatus[${status.index}].noOffDays" value="31"/></td>
注意:还可以指定RequestMethod.POST在控制器方法
@RequestMapping(value = "/tempOpen",method = {RequestMethod.POST, RequestMethod.GET})
public ModelAndView monthMemberList(@ModelAttribute("commanMonth") CommanMonth commanMonth) {
commanMonth.setMonthlyMemberStatus(dataService.listMonthMember());
return new ModelAndView("hlo","commanMonth",commanMonth);
}
@RequestMapping(value="/tempClose", method = RequestMethod.POST)
public ModelAndView updateUser(@ModelAttribute("commanMonth") CommanMonth commanMonth) {
System.out.println(month.getMonthlyMemberStatus());
dataService.updateRow(month);
return new ModelAndView("hlo","commanMonth",month);
}
请求标头 查看源代码
POST /sdnext/tempClose.html HTTP/1.1
Host: localhost:8080
Connection: keep-alive
Content-Length: 135
Cache-Control: max-age=0
Accept:text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
Origin: http://localhost:8080
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36(KHTML,like Gecko) Chrome/49.0.2623.112 Safari/537.36
Content-Type: application/x-www-form-urlencoded
Referer: http://localhost:8080/sdnext/tempOpen.html
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.8
Cookie: JSESSIONID=B9D81D17E3B18B75494CBF8517B15995
Form Data
view source
view URL encoded
monthlyMemberStatus0.noOffDays:24
monthlyMemberStatus1.noOffDays:31
monthlyMemberStatus2.noOffDays:31
monthlyMemberStatus3.noOffDays:31
你的方法默认为GET,所以你需要在控制器中指定RequestMethod.POST方法..看看我的答案(你可以在回答中添加评论,而不是发布另一个答案标签) –
即使我尝试使用get方法,它也不起作用。请给我一个解决方案,热切期待您的回复... – Manihtraa
这里是参考,看看这个http://viralpatel.net/blogs/spring-mvc-multi-row-submit-java-list/ –
由于我无法在评论字段中更新它,所以将它发布在Answer字段中。这里不用我servlet.xml中
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
<context:property-placeholder location="classpath:resources/database.properties" />
<context:component-scan base-package="com.room" />
<tx:annotation-driven transaction-manager="hibernateTransactionManager"/>
<bean id="jspViewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="${database.driver}" />
<property name="url" value="${database.url}" />
<property name="username" value="${database.user}" />
<property name="password" value="${database.password}" />
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="annotatedClasses">
<list>
<value>com.room.model.RoomMembers</value>
<value>com.room.model.DailyExpense</value>
<value>com.room.model.MonthlyExpense</value>
<value>com.room.model.FinalSettlement</value>
<value>com.room.model.MemberInOut</value>
<value>com.room.model.SpecialExpense</value>
<value>com.room.model.MonthlyMemberStatus</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">${hibernate.dialect}</prop>
<prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
<prop key="hibernate.hbm2ddl.auto">${hibernate.hbm2ddl.auto}</prop>
</props>
</property>
</bean>
<bean id="hibernateTransactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
</beans>
我改变公众的ModelAndView UpdateUser两个(@ModelAttribute(“commanMonth”)CommanMonth commanMonth),但仍名单值为null – Manihtraa
你能只是检查您的网络电话,什么样的数据传递,当你提交表格,如果你使用的是chrome而不是按f12>网络标签>请求标题 –
我附上答案f12>网络标签>请求标题中的数据 – Manihtraa